Continuing the discussion from New Manjaro user - Sound question:
LG gram 16 16Z90R and LG gram 17 17ZD90R have been patched by ALSA developers
6.11-stable review patch
* SND_PCI_QUIRK(0x1854, 0x0488, "LG gram 16 (16Z90R)", ALC298_FIXUP_SAMSUNG_AMP_V2_4_AMPS), + SND_PCI_QUIRK(0x1854, 0x048a, "LG gram 17 (17ZD90R)", ALC298_FIXUP_SAMSUNG_AMP_V2_4_AMPS), + {.id = ALC298_FIXUP_SAMSUNG_AMP_V2_4_AMPS, .name = "alc298-samsung-amp-v2-4-amps"},
Patch is included in kernels 6.11.10 and 6.12.1 available on Testing and Unstable branches and will probably be included in next Stable branch updates